From the ManufacturerThe robotic creature that behaves like a real bug. This set includes all 5 colors of the Newton Gravity Series. Each Nano comes in its own tube. Go online to register and track your own Nano collection. Batteries included. Product DescriptionHexbug Nano Refraction Series is one of the newest Hexbug Nano series. Bright colors, one very rare, one rare, one uncommon and two common colors.Product Features Vibrating robot bug scurries around like a real bug on any hard surface. Bugs navigate any maze by themselves! Make a maze or purchase a Hexbug Habitat. Collectible. Some bugs are very rare. Register bugs online and play online games. Requires 1 AG13/LR44 battery (included). Bug runs for many hours continuously.